He gained fame in New Zealand in the 1980s as the lead singer of the popular group The Mockers. Since The Mockers broke up, he has recorded and performed as a solo artist under the name Fagan and with his band LIG. He has written a sailing-themed autobiography, Swirly World, the Solo Voyages (2002), and several collections of poetry. He has also been involved with the Television New Zealand Intrepid Journeys television series.
Fagan has lived in London and now resides in Auckland.
He previously hosted a talkback show with Hay on Radio Live from 7 pm to 10 pm on week nights.